NX9548 - Microsemi

NX9548 Time Synchronous Buck Regulator

The NX9548 is a synchronous buck switching regulator with 21 mΩ internal N-channel MOSFETs, primarily intended for portable (mobile) applications. The NX9548 operates from 4.5 V to 24 V, and the output voltage range is from 0.75 V to 5 V, with output currents as high as 8 A. It can be selected to operate in synchronous mode, or non-synchronous (diode emulati.

Features

overcurrent protection (OCP), feedback under-voltage lockout (FB UVLO), and overvoltage protection (OVP). It also includes an integrated bootstrap Schottky diode, and provides lowvoltage (5 V) gate-drive capability. In addition it provides a Power Good indicator and has adaptive dead time. Features
 Adaptive COT Control
 Adjustable, Constant Switching Frequency up to 1 MHz
 Extremely Low-RDSON N-MOSFETs
 Bus Voltage 4.5 V to 24 V
 Selectable Diode Emulation Mode (PSM Mode)
 Current Limit, UVLO, OVP
 Gate Resistor Provision for EMI Reduction
 -40°C to +85°C Ambient Temperature
 -40°C .